从同一来源选取原料意味着啤酒保持不变。
Taking ingredients from the same source means the beers stay the same.
我们太阳系的有序特性使大多数天文学家得出结论，这些行星基本上在同一时间形成，且物质来源和太阳的一样。
The orderly nature of our solar system leads most astronomers to conclude that the planets formed at essentially the same time and from the same material as the Sun.
从 PURL 到持久性较底的 HTTP URI，这种的间接性和 DNS 提供的间接性非常相似，只要重定向的来源和目的不在同一类别中即可。
The indirection from PURLs to less-persistent HTTP URIs is much like the indirection provided by DNS, except that the source and the destination of the redirection are in the same category.
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